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Old 12-23-2012, 08:02 PM   #2676
hemophilic
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The safest is actually everyone obeying the speed limit. The "free flow of traffic" is intended to be around the speed limit for numerous reasons. Speed limits take into account that 90 year old granny and vehicles not rated for the autobahn. They account for government mandates on national fuel consumption like when they dropped the limit during the last oil crisis. But every Joe schmoe knows better and feels entitled to go faster... Cops account for the maniac impatient douches always in a rush to get to whatever unimportant bs they're racing to.
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Old 12-23-2012, 08:13 PM   #2677
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Originally Posted by stevehnm View Post
I agree with you 100% - it's all relative to the speed of the vehicles around you. Traffic Engineers try to set the speed limit at the 85th percentile of free flow traffic - actually about the first standard deviation. Unfortunately there are non-engineers who apply their own prejudices sometimes. (Of course so do some people who call themselves engineers as well - but I would beg to differ in that personal preferences have nothing to do with science).

About half of my commute is fairly busy interstate - most of the rest is rural interstate. I try to stay to the right, and even go on by slower traffic by itself in the left lane - and give them "the look" - about one third anger, one third disgust, and one third pity because I think they're stupid.

The safest is actually all traffic flowing at the same speed, or "platooning". The further the speed limit is below the free flow traffic speed, the more accidents.

I apply the factor of how much reducing speed increases mpg - in my three vehicles - that controls how fast I go. The Corolla there is no consideration for fuel savings, in my lifted 4Runner I try not to exceed 65, and I am against another consideration with the Impreza - probability of getting a ticket, so I rarely exceed 80 in that. Faster than that and my time is not worth the gas savings.

As far as how long I've been doing thas, I bought my first Subaru, an '81 4WD hatchback (with a two speed transfer case - shift on the fly!), new.

whoa whoa whoa, hold the phone!

I thought you said if you drive 65 you will die? now you admit you can drive 65 and you haven't been killed yet? how can this be?
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Old 12-23-2012, 11:37 PM   #2678
stevehnm
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Quote:
Originally Posted by hemophilic View Post
The safest is actually everyone obeying the speed limit. The "free flow of traffic" is intended to be around the speed limit for numerous reasons. Speed limits take into account that 90 year old granny and vehicles not rated for the autobahn. They account for government mandates on national fuel consumption like when they dropped the limit during the last oil crisis. But every Joe schmoe knows better and feels entitled to go faster... Cops account for the maniac impatient douches always in a rush to get to whatever unimportant bs they're racing to.
That is not "the safest". "The safest" is when everybody stays home and nobody drives. There is a trade-off between productivity and safety. Right now the death rate on freeways is like 1.2 per hundred million miles. Think about it. How long would it take to drive a hundred million miles? You are safer in your car than out of it.

And the "free flow of traffic" is not determined by speed limits, it is determined by traffic. Control of speeds by enforcement is one of the stupidest and most dangerous concepts we have. It has been shown time and time again that, as I said, setting the speed limit at the 85th percentile is the best option. When we finally got rid of the 65 mph limit Montana went back to "reasonable and prudent". The Feds cracked down on them and made them set the speed limit at 75 mph (or they would withhold funding). The accident rate actually went *up*.

Further, the 55 mph limit to "save gas" was a joke, hamstringing the entire nation. Why do you think they got rid of it?

Even further, what makes you think all those people are going to "unimportant" places? You have to consider productivity in the equation. "Joe Schmoe" works x hours per day and drives to and from work y hours per day. The time he gets to be at home with his family is 24-x-y.
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Old 12-24-2012, 11:45 AM   #2679
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Quote:
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Tomorrow I am going to be doing a 270 mile round-trip journey tomorrow, I am going to try to hyper-mile it. We shall see how it goes!
Quote:
Originally Posted by flyboy1100 View Post
When I was under 20 I felt like Stevehnm, but now that I'm nearly 30 with a kid, anyone who glares at me for going anywhere from 5 under to 5 over depending on my mind that day can **** off because I don't care what you think of my driving habits
Note: I won't drive slow in the left lane, if I am passing I will hit the gas because I absolutely hate when someone takes 5+ miles to pass me, it is just unsafe for both cars
So I never made the trip yesterday. Instead my son was born early! Flyboy I hear what you're saying. I am also in my 30's and now have a kid, so my days of more aggressive fast driving are long gone. And with the purchase of this car, I find myself driving speed limit to max out my MPGs.
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Old 12-24-2012, 03:12 PM   #2680
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Congrats on the early Christmas surprise steye lots of sleepless nights ahead
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Old 12-24-2012, 03:57 PM   #2681
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Quote:
Originally Posted by ST Eye View Post
So I never made the trip yesterday. Instead my son was born early! Flyboy I hear what you're saying. I am also in my 30's and now have a kid, so my days of more aggressive fast driving are long gone. And with the purchase of this car, I find myself driving speed limit to max out my MPGs.

oh there goes his life of getting one present for his birthday and christmas..lol jk but i have friends who lived that every year when they were younger.
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Old 12-24-2012, 06:06 PM   #2682
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Quote:
Originally Posted by ST Eye View Post
So I never made the trip yesterday. Instead my son was born early! Flyboy I hear what you're saying. I am also in my 30's and now have a kid, so my days of more aggressive fast driving are long gone. And with the purchase of this car, I find myself driving speed limit to max out my MPGs.
Congrats! that is awesome. i just had a baby girl recently, and as i'm sure you already know, it's a big life changer in so many ways.

enjoy the awesome gift!
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Old 12-24-2012, 07:58 PM   #2683
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Maybe your son will be like our boy. He's 19m old and always says wheeeee when wife or I accelerate a bit quickly in the Subie.
He never says that in the Xterra. Must be a sporty car kid.

Paul
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Old 12-25-2012, 12:50 AM   #2684
flyboy1100
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My daughter just sleeps in the car, which was great today when we spent 15 hours in the car, she is 14months.

Drove 870 miles today, first 350 miles or so were 23-25mpg average, remaining was 33mpg, so overall decent mileage, car did great!
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Old 12-25-2012, 10:10 AM   #2685
sgoldste01
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Why was the mileage so low for the first 350 miles? Lots of hills or stop and go?
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Old 12-25-2012, 10:36 AM   #2686
flyboy1100
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Originally Posted by sgoldste01 View Post
Why was the mileage so low for the first 350 miles? Lots of hills or stop and go?
Not sure other than my wife was speeding (80) and it was anywhere from -5f to -10f. She also was trying to put it in 5th@ 45 and continue accelerating (which she can get away with in the jetta). There was a little wind too, but shouldn't have been enough to drop the mpg that much. It was also all uphill we started at 850ft elevation, and when I took over we were up to around 3000ft.

Holy ramblings....lol
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Old 12-25-2012, 10:59 AM   #2687
sgoldste01
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Yeah, all of those factors will do it.
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Old 12-26-2012, 02:58 AM   #2688
Penguin44
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Just completed a 250km trip. Cruise at 105kph and the last 50km are uphill to 5,632ft. Avg was 6.2l/100km. Comes to about 155 miles and 37.9mpg. Avg temp was 0c or 32f

Btw that's hand calculated not trip computer
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Old 12-26-2012, 06:47 AM   #2689
sgoldste01
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^^ Nice!
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Old 12-26-2012, 08:52 AM   #2690
flyboy1100
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Quote:
Originally Posted by sgoldste01 View Post
Yeah, all of those factors will do it.
I think even with the first 350 being crap mpg we still ended up with 30mpg average with an average speed of probably 67-7mph. I'm not disappointed
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Old 12-26-2012, 09:30 AM   #2691
Blackmamba24kb
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oopsies!!

wrong thread!!

Last edited by Blackmamba24kb; 12-26-2012 at 10:30 AM.
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Old 12-26-2012, 09:45 AM   #2692
myrt1987
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Looks great. Nice job.

but... wrong thread? lol
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Old 12-26-2012, 10:31 AM   #2693
Blackmamba24kb
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Looks great. Nice job.

but... wrong thread? lol

oops! my bad...moved! thanks!!
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Old 12-26-2012, 12:42 PM   #2694
saabarupp
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After a 200 mi trip of all highway, 2 people with a little luggage, moderately hilly, in ~30 degree F temps, with winter tires, cruise dialed at 65 mph, I got a gauge indicated 31.2 mpg. Not bad considering the conditions.
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Old 12-26-2012, 01:25 PM   #2695
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I drove a total of 1132 miles this past weekend for the holidays with a calculated average of 29.9 MPG(computer said 31.2). Average speed of 51.7 miles per hour in 15-30 degree temps. My car was loaded down with two adults, a Great Dane, cargo-box filled with guns and ammunition. So combined with heavy headwinds, testing out the car in snow and icy conditions for about 50 miles, and the aerodynamic drag of the cargo-box I'd have to say it did pretty good.
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Old 12-26-2012, 08:00 PM   #2696
vwgti123
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Have a question. Is the total tank AVG MPG trip computer off on these cars. I consisently find almost 3mpg difference between what the car is displaying vs. hand calculating. Last 3 or 4 tanks computer states right at 30MPG give or take a tenth, but I keep hand calculating about 27MPG. Def something wrong, 27mpg for real world driving was not was I purchased this car for. Very disapointing.

I have always done this on all cars, computer or not (and yes I do reset the trip comp). Fill the car - drive - fill again - Total miles / gallons added = MPG. And i fill the same, when it clicks i stop.. and usually takes approx same gallons based upon when I feel needed. IDK. something just does not make sense.
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Old 12-26-2012, 08:06 PM   #2697
flyboy1100
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Originally Posted by vwgti123 View Post
Have a question. Is the total tank AVG MPG trip computer off on these cars. I consisently find almost 3mpg difference between what the car is displaying vs. hand calculating. Last 3 or 4 tanks computer states right at 30MPG give or take a tenth, but I keep hand calculating about 27MPG. Def something wrong, 27mpg for real world driving was not was I purchased this car for. Very disapointing.

I have always done this on all cars, computer or not (and yes I do reset the trip comp). Fill the car - drive - fill again - Total miles / gallons added = MPG. And i fill the same, when it clicks i stop.. and usually takes approx same gallons based upon when I feel needed. IDK. something just does not make sense.
Are you accounting for odometer error?
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Old 12-26-2012, 08:08 PM   #2698
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why would there be odometer error?
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Old 12-26-2012, 08:19 PM   #2699
sgoldste01
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Our odometers seem to be off by approximately 2.7%. This accounts for much of the MPG error.
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Old 12-26-2012, 08:24 PM   #2700
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Our odometers seem to be off by approximately 2.7%. This accounts for much of the MPG error.
Is that 2.7% to the (+ or the -) So my car is piling up more miles than I have actually driven? When I use my GPS the speedo MPH is pretty spot on with the GPS display MPH.
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